Hair net



FIG. 1 is a front view of a hair net showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof, the right side being a mirror image; and,

FIG. 4 is a top view thereof.

The broken line showing of the human form in FIG. 1, FIG. 2, and FIG. 3 and FIG. 4 for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a hair net, as shown and described. 